While working with Gallida Tuyet and her fireteam on Venus, Isidel and her fellow Guardians became engaged in a desperate battle with the Vex near one of the constructs gates. They formed a desperate plan to defeat them that involved Isidel entering into a simulation. However, once within the simulation, Isidel forgot about her situation and the plan. Within, she explored the Juno Chasma and discovered a Vex facility in which humans were being displayed in cages like a zoo without their knowledge. She commented to her Ghost that the imprisoned humans were did not know of the Vex and that they were being watched, unaware that she was trapped as they were. Isidel entered the facility and tried to convince the inhabitants she was there to save them, but the beings responded with Vex directives. Despite this, she led them out of the facility and up the chasma's edge. After finishing the climb she turned to assist the man behind her, but all of the prisoners had disappeared. This triggered Isidel's memory and she realized she was stuck within a simulation still and yelled for Gallida to pull her out, but there was no response from the Warlock.
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